Skip the auto shop - Our mechanics make house calls

Q: check engine light just came on

asked by on

My service soon light just came on a day ago and today i went to auto zone to see what the problem was and the guy ran the trouble shooting and got code P0133 he told me it could be a few things either air leak near sensor , open or short circuit condition or Faulty HO2S11 (bank sensor 1) .

My car has 95500 miles.
My car has an automatic transmission.

Hi there:

My personal car is the exact same model, (but 2008) and I recently had the same P0133 OBD-II code which was accompanied by some small acceleration issues. P0133 indicates the ECM senses that the O2 Sensor is not changing its voltage output quickly enough to the changing air-fuel ratio. Hence why the P0133 trouble code definition is O2 sensor circuit “slow response” because the circuit is not reacting quickly enough. After we inspected the car, we found the rear O2 sensor connector (not the sensor itself) was dirty. I replaced the electrical harness, reset the code and issue went away. Not 100% sure that your vehicle is having the same issue, but you should start by having a local mechanic inspecting your O2 sensor and electrical harnesses; as this is usually the triggering factor for this code.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: O2 sensor replacement help needed.

The part that is covering the oxygen sensor is the heat shield on the exhaust manifold. You will have to remove the heat shield first to get the O2 sensor off. If you need further assistance with removing the heat...

Q: Car won't start

Hello. This can be caused by a number of things. If the engine is not cranking then you may have a key issue or more commonly a failure in the electronic ignition switch. Also, the battery should be load tested...

Q: How to keep my car run well for years?

Hi, thanks for writing in. I would suggest following the preventative maintenance schedule located in your owner's manual. Vehicle manufactures provide these for owners to follow to ensure the longevity of each vehicle. Some basic preventative items include, but are...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...